Drummer829

ok, well i dont really know what the bpv really does, so can someone explain it to me...and also why to get a different/better one for a s/c

GammaTNT

iTrader: (8)

https://www.scionlife.com/forums/vie...&highlight=bpv
read that

Drummer829

i still dont know what they do and the advantages of getting a bosch 110, or a forge 007

BLUEMEANIE

some brands hold boost better than others. Its like using different bov's on a turbo.

The bpv relieves excess pressure in the charge pipe (between the turbine and the throttle body) when the throttle plate closes. Without a bpv/bov the incoming air can get forced back into the turbine causing the fins/blades to bend over time due to the excess pressure.

Th bpv/bov itself uses positive and negative pressure (boost and vacuum) to open and close the piston allowing pressure to build and escape.

Drummer829

ooook, so its better for your engine basically?

BLUEMEANIE

better for your engine and s/c.

Drummer829

so a bypass valve like the forge007...will it gain any hp or anything when you have the s/c, or will it just help the s/c run better with the engine?

1_kLEan_tC

I believe it will just help with engine...

05-RS1

if you plan on changing your s/c pulley to increase boost, then an upgraded bpv will help you gain more whp. the stock bpv can barely hold the stock 7psi as advertised. lets say you upgrade to NST 9.5lb pulley and you still have the stock bpv. you may still only see 7psi because the bpv cannot hold anything more then that. upgrading will let you hold more boost and in this case, more boost means more power.

Drummer829

yayy!! you read my mind what i was gonna do with the the s/c..i was gonna get the nst 9.5lb pulleys, but i dont know what exactly to get for that (but that will be another post, or i will just call nst)...

so whats a good bpv with the 9.5lb pulley? i heard forge 007 was good

BLUEMEANIE

I'm using the 007 with the NST 9.5lb pulley and it's working just fine.

Drummer829

ye, the biggest thing im worried about is like blowin a piston

05-RS1

you wont have to worry about that if you're s/c'd unless your pushing the limits of the s/c. if your gonna be running the NST 9.5lb pulley, you'll only see max boost at redline which by then you would have to shift. so really it's only under max boost for 1 second tops.

Drummer829

and that would only be when i slam on the gas and get the car up and goin right?

yellowxboy

i got the s/c last week installed, swapped the stock bpv for the forge 007 one ... it sounds more quieter .. weird. lol

fyi ~ i'm using the yellow springs. maybe i'll switch to the green cuz i'm stock.

hunterUnknown

iTrader: (1)

dudes, is the forge the only bpv that will hold the full 9.5? or am i misunderstanding. i thought the 110 would as well.

kikcaffine

No my turboxs holds just fine. I believe the 110 will because its a brass piston design instead of a plastic diaphram.

Drummer829

how much whp will i be expecting with the s/c, mmw header, s-pipe, catback exhaust, nst 9.5lb pulley and forge 007 bpv

JPsTc

Yea the 007 is a bit noisy. If your on the highway and you let off the gas you can here it. Im gona throw the 110 back in for a bit and see which one i really wana use.



Oh and Drummer, with that exact setup i hit 230whp. Although i would not ever suggest getting the MMW header. Install because of the s/c is a pita. Im glad to be rid of it. I might go with DME or Megan in the future (probably megan cuz its really inexpensive lol).

Drummer829

hey what do you mean the s/c is a pita??